Modular indicator
An indicator module includes first electrodes disposed on a first support surface, each of the first electrodes having a flexible portion having a sloped section forming an oblique angle with the first support surface, a second electrodes disposed on a second support surface spaced apart from the first support surface along a longitudinal direction, a set of conductors elongated substantially in the longitudinal direction, each of the first electrodes being electrically connected to the a respective one of the second electrodes via a respective one of the conductors, and an indicator circuit, such as a set of LEDs, electrically connected to one or more of the conductors and adapted to generate a human perceptible signal when the indicator circuit receives electrical power from the one or more of the conductors.
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This application is a continuation of U.S. patent application Ser. No. 16/675,708, filed Nov. 6, 2019, now U.S. Pat. No. 10,984,636, issued Apr. 20, 2021, which is a continuation of international application Serial No. PCT/US2019/036761, filed Jun. 12, 2019, and designating the United States, which international application claims the benefit of U.S. patent application Ser. No. 16/006,158, filed Jun. 12, 2018, and issued as U.S. Pat. No. 10,475,299, on Nov. 12, 2019, which is a continuation-in-part of U.S. patent application Ser. No. 14/803,619, filed Jul. 20, 2015, and issued as U.S. Pat. No. 9,997,031 on Jun. 12, 2018. All of the above-referenced prior applications are incorporated herein by reference in their entirety.
BACKGROUNDThe present disclosure relates to indicator assemblies having multiple modular indicator elements. Examples of such assemblies include assemblies sometimes known as “tower lights,” “stack lights” or “tower stack lights.” Such assemblies find wide range of applications, from safety, automation and workflow management in industrial settings to status indication in office settings. In a typical assembly of this kind, multiple indicator modules, such as LED light modules, which are typically cylindrical in shape, are connected together in series along a longitudinal axis. The module at one end of a series is connectable to a base having multiple electrodes, each connected to a wire or connector pin for conducting electrical signal (i.e., power) from a signal source, such as a controller, to the respective electrode. Each module may have multiple conductors running from one end of the module to the other, typically near or inside the cylindrical housing wall of the module. When the modules are connected together, the conductors form multiple conductive paths through the assembly such that each of the conductors in each module is connected to a corresponding electrode in the base to receive an electrical signal. Each module also has one or more indicator circuits, such as LED elements, often with associated electronic components for various purposes, such as intermittent signaling and surge protection. The indicator is typically connected to one of the conductors. The angular position (rotational about the longitudinal axis) between each pair of adjacent modules is typically fixed, for example by bayonet-type mounts. Thus, the order of the modules in the series typically determines which electrode in the base corresponds to the indicator circuit in each module. Such an arrangement imposes certain constraints and complications on the design and deployment of such indicator assemblies and associated components such as controllers and cables.
SUMMARYIn one aspect of this disclosure, an indicator module includes a body portion having a mounting portion, such as a bayonet mount, to removably attach the module to another module, such as a module of the same kind. The module also includes a first plurality of electrodes attached to the body portion and disposed to be in contact with respective ones of a plurality of electrodes in the attached module or base. The indicator module further includes an indicator circuit, such as a visual or audio indicator circuit, and a switch module, such as a DIP switch, operatively connected to the first plurality of electrodes and to the indicator circuit. The switch module is configurable (e.g., by setting the DIP switch) to selectively operatively connect the indicator circuit to one of the first plurality of electrodes. In another aspect of the disclosure, an indicator module described above can further include a second plurality of electrodes, each operatively connected to a respective one of the first plurality of electrodes by a conductor such as a conductive wire. Each plurality of electrodes is located at one end of the module so that the module can be connected to another indicator module at each end, or another indicator at one end and a base at the other.
In another aspect of the disclosure, the visual indicator in an indicator module with conductive wires described above includes a plurality of light elements, such as LEDs, with the conductive wires disposed in a more interior region of the module as compared to the light elements, which can be distributed near the periphery of the module. Such an arrangement reduces shadows of the wires cast by the light elements which can be visible from the exterior of the module.
In another aspect of the disclosure, the first plurality electrodes can each include a flexible portion so that when the module is removably attached to another module or a base, each electrode in the first plurality of electrodes is biased against the electrode in the other module or base.
The present disclosure is made with reference to example devices and methods illustrated in the attached
Referring to
Referring to
In this example, the top electrodes (440) are substantially flat and face the direction of the longitudinal axis of the lower module (210). The electrodes (118 in
Not all indicator modules need to have both top and bottom electrodes, and top and bottom mounting portions. An indicator module, such as the audio module 170, can be designed to always be the top module in a stack, and as such, needs only to have a bottom mounting portion and bottom electrodes (details not shown).
As shown in
The body portion (400, 500) of each indicator module (210, 220) can also include a housing wall (460, 560), which in the case of an optical indicator module, may be a transparent or translucent wall for transmitting light emitted by an illumination source contained therein.
Referring to
Each module further includes an indicator circuit, which in this example includes light sources (630), such as light emitting diodes (LEDs) and associated electronic components (640), which can include, for example, a driver circuit, blinker circuit and protection circuit. In this case, the light sources (630) are mounted on the bottom surface (622) of the top circuit board (620) and (not shown) on the top surface (612) of the bottom circuit board (610). In this case, the light sources (630) are also distributed near the periphery, or housing wall (560) of the upper module (220).
With further reference to
When an indicator assembly (100 or 160) is assembled, there are several conductive paths running through all the modules in the assembly. Several such conductive paths (logically labeled “M1” through “M6” in
Regarding the switch module (550), one function of the switch is to selectively interconnect the indicator circuit, such as visual indicator circuit (630, 640), with one or more of the conductive paths. For example, the indicator circuit in each indicator module can be connected between the common terminal (e.g., ground) and, via the switch module, selectively to one of the signal sources. The connection can be made, for example, to the bottom electrodes (530) via conductive lines (not shown) in the circuit board (610). The switch module (550) can be any suitable connecting device, including switches such as DIP switches, rotary switches, sliding switches, and the like. Though less convenient, the switching module (550) can also be a jumper arrangement. In an example, shown in
As a further example, two or more indicator modules, each occupying a different physical location, in an indicator assembly can be configured to be the same logical module by appropriate setting of the switch module (550). For example, if the switch element in position “3” in a DIP switch in each of two or more indicator modules in an indicator assembly is switched to “ON,” each of the modules is “seen” as M3, or Module 3, by the controller. Both or all of the modules set to M3 will be activated. For example, in an indicator assembly (e.g., one as shown in
Other functions can be provided by the switch module (550, 1050). For example, a portion of the DIP switch (1050) can be used to affect the type of indication provided by Module 3 (assuming the switch element in position “3” is “ON”). For example, switch elements in positions “7” and “8” can be used to control whether the indicator module is active continuously or intermittently, and the frequency of intermittent indications (flashes or beeps).
A variety of electrical and electronic circuits can be used to implement specific functional aspects of the indicator module. For example, the circuit schematically shown in
In accordance with another aspect of the present disclosure, additional switches can be included in a indicator module (210,220) to enable additional functionalities of the module. The additional switches can be included in the form of additional individual switches (1052,1054) in the switch module (550,1050). Alternatively or in addition, they can be included, as in an exemplary embodiment shown in
For example, the light sources (630) can each be a multi-color LED or a group of discrete single-color LEDs of different colors, and switches (1272,1274) can be connected to power respective LEDs or color components of a multi-color LED to produce a desired color by mixing colors emitted by LEDs or LED components of different colors. For example, an RGB (red-green-blue) LED may provide seven different colors (turning on one, two, three colors); an RGBA (red-green-blue-amber) LED may provide fourteen colors (turning on one, two, three colors) or more. TABLE I below shows an example in which four switches (5B-8B) in a DIP switch module (1270) are used to generate fourteen colors. In this example, the circuit is configured such that turning all switches (5B-8B) on does not result in a state in which all four color components are on; instead, a demonstrative state is reached, which can be, for example, cycling through all fourteen colors while the LEDs are flashing.
As further illustrated by the example of TABLE I, switches (1272,1274) can be connected to enable other functionalities in similar ways as the switches “7” and “8” (1054) described above. For example, switches 2B-4B can be connected to appropriate circuitry to cause the LEDs to flash or strobe at various frequencies, or to provide intensity sweep (pulse); switch 1B, as another example, can be connected to appropriate circuitry to cause the LEDs to emit light at various intensities.
As summarized in TABLE II below, the switching states of the switches (1052) in the other DIP-switch (550,1050) controls the logical position of each indicator module as described before.
The user configurable indicator modules described above can also be used with other types of indicator modules, such as traditional tower light modules, to achieve desired configurations.
An example circuit, schematically shown in
Thus, a device and method have been described, which, among other things, provide a high degree of flexibility in configuring modular indicator assemblies (tower lights and the like). By the use of a switch module inside an indicator module, the module can be configured to function as a module in any logical (electronic) position in a multi-indicator assembly, regardless of its location in the physical sequence of the indicator modules in the assembly. The arrangement of the conductive paths relative to optical indicator elements (e.g., LEDs) provides a reduction in shadowing from the conductive paths. Resilient, or flexible, electrodes can be used for proper inter-modular electrical connections.
Many modifications and variations of the examples disclosed herein, and numerous other embodiments of the invention can be made without exceeding the scope of the invention, which is to be measured by the claims hereto appended.
Claims
1. An indicator module, comprising:
- a first circuit board having a first support surface;
- a first plurality of electrodes disposed on the first support surface, each of the first plurality of electrodes comprising an arched flexible portion having a lower portion and an upper portion disposed farther from the first support surface than the lower portion;
- a second circuit board having a second support surface spaced apart from the first support surface along a longitudinal direction, the first and second support surfaces facing substantially away from each other along the longitudinal direction;
- a second plurality of electrodes disposed on the second support surface;
- a plurality of conductors elongated substantially in the longitudinal direction, each of the first plurality of electrodes being electrically connected to a respective one of the second plurality of electrodes via a respective one of the plurality of conductors;
- an indicator circuit electrically connected to one or more of the plurality of conductors and adapted to generate a human perceptible signal when the indicator circuit receives electrical power from the one or more of the plurality of the conductors; and
- a body portion supporting the first and second circuit boards and comprises a housing wall enclosing the indicator circuit around the longitudinal direction.
2. The indicator module of claim 1, wherein first plurality of electrodes are positioned substantially along a circle defining a tangent direction at the position of each of the first electrodes, wherein the arched flexible portion of each of the first plurality of electrodes is bowed substantially in a plane parallel to the longitudinal direction and the tangent direction defined at the electrode.
3. The indicator module of claim 1, wherein each of the second plurality of electrodes comprises a substantially flat contact area facing substantially in the longitudinal direction.
4. The indicator module of claim 1, wherein the indicator circuit comprises a plurality of light emitters mounted on the first or second circuit board and surrounding the plurality of conductors, and the housing wall comprising a transparent or translucent portion located to permit transmission of light from the light emitters through the transparent or translucent portion.
5. The indicator module of claim 4, wherein the light emitters are arranged substantially along a circle defining through its center a longitudinal axis substantially along the longitudinal direction, the circle lying in a plane substantially parallel to the first support surface, and the plurality of conductors are disposed in proximity to the longitudinal axis.
6. The indicator module of claim 5, further comprising a spacer disposed between the first and second support surfaces, accommodating the plurality of conductors passing through the spacer, and separating the plurality of conductors from each other.
7. The indicator module of claim 1, further comprising a switch module operatively connected to the first plurality of electrodes and to the indicator circuit and configurable to selectively operatively connect the indicator circuit to one or more of the first plurality of electrodes.
8. The indicator module of claim 7, wherein the switch module is configurable to selectively operatively connect the indicator circuit to one or more of the first plurality of electrodes independent of whether the indicator circuit is connected to any other one of the first plurality of electrodes.
9. The indicator module of claim 1, wherein the body portion further comprises:
- a first mounting portion of a first configuration proximal to the first plurality of electrodes; and
- a second mounting portion of a second configuration proximal to the second plurality of electrodes, the first and second configurations being adapted to enable the first mounting portion to engage a mounting portion of an external device and of the second configuration to form a mating attachment between the indicator module and the external device, and to enable the second mounting portion to engage a mounting portion of an external device and of the first configuration to form a mating attachment between the indicator module and the external device.
10. The indicator module of claim 9, wherein the first and second configurations are adapted to enable the first mounting portion to engage a mounting portion of an external device and of the second configuration to form a mating attachment between the indicator module and the external device when the first mounting portion is rotated relative to the external device about the longitudinal direction, and to enable the second mounting portion to engage a mounting portion of an external device and of the first configuration to form a mating attachment between the indicator module and the external device when the second mounting portion is rotated relative to the external device about the longitudinal direction,
- wherein the arched flexible portion of each of the first plurality of electrodes bows out in substantially a direction between the longitudinal direction and a direction of motion of the electrode when the first mounting portion is rotated relative to the external device about the longitudinal direction.
11. The indicator assembly of claim 10, wherein the first and second configurations are adapted to enable the first mounting portion to engage a mounting portion of an external device and of the second configuration to form a mating attachment between the indicator module and the external device when the first mounting portion is rotated from an unlocked position to a locked position relative to the external device about the longitudinal direction, and to enable the second mounting portion to engage a mounting portion of an external device and of the first configuration to form a mating attachment between the indicator module and the external device when the second mounting portion is rotated from an unlocked position to a locked position relative to the external device about the longitudinal direction,
- wherein the first configuration includes a first marker, and the second configuration includes a second marker, the first and second markers being arranged to cooperatively provide a first pattern indicative of the unlocked position of the first or second mounting portion relative to the external device, and a second pattern indicative of the position of the first or second mounting portion relative to the external device.
12. An indicator assembly kit, comprising a plurality of indicator modules of claim 9, wherein each of the second plurality of electrodes of the first one of the plurality of indicator modules and a corresponding one of the first plurality of electrodes of the second one of the plurality of indicator modules are adapted to form compressive contact with each other when the second mounting portion of the body portion of the first one of the plurality of indicator modules and the first mounting portion of the body portion of the second one of the plurality of indicator modules are in a mating attachment to each other.
13. The indicator assembly kit of claim 12, wherein the indicator circuit of at least one of the indicator modules comprises a visual indicators circuit adapted to generate a light signal when the indicator circuit receives electrical power from the one or more of the plurality of the conductors, the kit further comprising an audio indicator module comprising an audio indicator circuit and a body portion housing the audio indicator circuit, the audio indicator circuit being adapted to generate an audio signal when the indicator circuit receives electrical power from the one or more of the plurality of the conductors, and the body portion of the audio indicator module having a mounting portion of the first or second configuration.
14. The indicator assembly kit of claim 12, further comprising a base module comprising:
- a body portion have a mounting portion of the first or second configuration;
- a plurality of electrodes proximal to the mounting portion; and
- a plurality of conductors adapted to electrically connect the respective ones of the plurality of electrodes of the base module to one or more signal sources external to the base module,
- each of the plurality of electrodes of the base module and a corresponding one of the first plurality of electrodes of the first indicator module or the second plurality of electrodes of the second indicator module being adapted to form compressive contact with each other when the mounting portion of the base portion and the first mounting portion the of the first indicator module or the second mounting portion of the second indicator module are in a mating attachment to each other.
15. An indicator assembly, comprising:
- a first module, comprising: a body portion having a first mounting portion and a second mounting portion spaced apart from the first mounting portion along a longitudinal axis; a first support surface proximal to the first mounting portion of the body portion; a first plurality of electrodes disposed on the first support surface, each of the first electrodes comprises an arched flexible portion having a lower portion and an upper portion disposed farther from the first support surface than the lower portion; a second support surface proximal to the second mounting portion of the body portion, the first and second support surface facing substantially away from each other along the longitudinal axis; a second plurality of electrodes disposed on the second support surface; a plurality of conductors elongated substantially in the longitudinal direction, each of the first plurality of electrodes being electrically connected to a respective one of the second plurality of electrodes via a respective one of the plurality of conductors; and an indicator circuit electrically connected to one or more of the plurality of conductors and adapted to generate a human perceptible signal when the indicator circuit receives electrical power from the one or more of the plurality of the conductors;
- a second module having a body portion adapted to engage the first or second mounting portion of the first module to form a mating attachment between the first and second modules.
16. The indicator assembly of claim 15, wherein the second module and first or second mounting portions of the first module are adapted to form a mating attachment between the first and second modules when the second module is rotated relative to the first module about the longitudinal axis,
- wherein the first and second mounting portions have a first and second configurations, respectively, adapted to enable the first mounting portion to engage a mounting portion of a device external to the first module and of the second configuration to form a mating attachment between the indicator module and the device external to the first module when the first mounting portion is rotated relative to the device external to the first module about the longitudinal direction, and to enable the second mounting portion to engage a mounting portion of a device external to the first module and of the first configuration to form a mating attachment between the first module and the device external to the first module when the second mounting portion is rotated relative to the device external to the first module about the longitudinal direction,
- wherein the arched flexible portion of each of the first plurality of electrodes of the second indicator module bows out in substantially a direction between the longitudinal direction and a direction of motion of the electrode when the first mounting portion is rotated relative to the device external to the first module.
17. The indicator assembly of claim 16, further comprising a base module, comprising:
- a body portion have a mounting portion;
- a plurality of electrodes proximal to the mounting portion; and
- a plurality of conductors adapted to electrically connect the respective ones of the plurality of electrodes of the base module to one or more signal sources external to the indicator assembly,
- the mounting portion of the base module being adapted to engage the first or second mounting portion of the first module to form a mating attachment between the base module and the first module,
- each of the plurality of electrodes of the base module and a corresponding one of the first or second plurality of electrodes of the first module being adapted to form compressive contact with each other when the mounting portion of the base portion and the first or second mounting portion the of the first module are in a mating attachment to each other.
18. The indicator assembly of claim 16, wherein:
- the indicator circuit of the first modules comprises a visual indicators circuit adapted to generate a light signal when the indicator circuit receives electrical power from the one or more of the plurality of the conductors, and
- the second module comprises an audio indicator module comprising an audio indicator circuit and a body portion housing the audio indicator circuit, the audio indicator circuit being adapted to generate an audio signal when the indicator circuit receives electrical power from the one or more of the plurality of the conductors.
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Type: Grant
Filed: Apr 19, 2021
Date of Patent: Feb 14, 2023
Patent Publication Number: 20220036707
Assignee: BANNER ENGINEERING CORPORATION (Minneapolis, MN)
Inventors: Charles Dolezalek (Stacy, MN), Darrell Raymond Pikkaraine (Elk River, MN), Maximilian John Aponte (Shakopee, MN), Neal A. Schumacher (Plymouth, MN)
Primary Examiner: Hongmin Fan
Application Number: 17/233,834
International Classification: G08B 5/38 (20060101); G08B 7/06 (20060101); G08B 21/18 (20060101); F21Y 115/10 (20160101); F21W 111/00 (20060101); H05B 45/10 (20200101);